201120315 六、發明說明： 【發明所屬之技術領域】 本發明一般涉及流體分配系統。特別地，本發明涉及 允許僅指定的帶有可分配材料的再塡充容器安裝在其中的 分配器’以及如果需要’由選定的經銷商安裝。更具體地 ’本發明涉及重置停轉的、使用於電子密鑰流體分配系統 的栗。 【先前技術】 提供流體分配器用於餐館、工廠、醫院、浴室和家庭 是眾所周知的。這些分配器可包含流體，例如肥皂、抗菌 清潔劑、消毒劑、洗液和類似液。爲分配器裝備某些種類 的泵致動裝置也是已知的，其中使用者推或拉一桿以分配 一定量的流體到使用者的手中。“不用手”分配器也能使用 ，其中使用者簡單地將手放置在分配器外殼保持的感測器 的下面，且一定量的流體由機動化泵分配。相關類型的分 配器可用於分配粉、氣霧劑材料或紙製品。 分配器可直接地持有一定量的流體，但這被發現麻煩 而且服務困難。因此，使用持有一定量的流體的塡充袋或 容器和提供泵和噴嘴裝置是已知的。這些塡充袋的優勢在 於，它們能輕易安裝沒有麻煩。而且分配器能監視使用， 以指示塡充袋中的量少了和提供其他的分配器狀態資訊》 帶有如電子或機械密鑰的識別器的再塡充容器已在開 發，以便阻止未授權的人替換劣等產品進入分配系統。具 -5- 201120315 體地，各種機械或電子密鑰可使用，以便將再塡充容器和 包含其中的流體與具體的分配器關聯。電子密鑰可包括’ 但不限於，磁性感測器、光學感測器、射頻識別設備以及 類似物。這些種類的分配器中，識別器正確地定位或結合 在再塡充容器上和再塡充容器正確地容納在分配器外殼中 是關鍵。如果識別密鑰不正確地定位，那麼再塡充容器不 能被分配系統讀取而且使得無法運行。然而，有可能的是 ，再塡充容器被分配系統可操作地檢測到，但仍然以泵和 噴嘴裝置會堵塞的這樣的方式安裝。不正確地安裝的停轉 或堵塞的再塡充容器能引起栗致動器的損壞，該泵致動器 由再塡充容器及/或電動機組件和相關的移動泵致動器的 聯動裝置保持。不正確地安裝的再塡充容器或停轉的泵致 動器也能導致過量流體被分配。 由分配器保持的泵致動器或由再塡充容器保持的泵和 噴嘴裝置能以任何數量的原因而堵塞或停轉。例如，泵能 被來自以前的分配循環的流體材料所阻塞。碎片或其他阻 礙物會阻礙泵致動器的移動，或如指出的，再塡充容器不 能正確地安裝進入分配外殼。例如，泵能安裝在致動器下 面，阻止分配器和再塡充容器的運行。過去，問題被使用 者認出停轉情況然後正確地手動重置在分配器外殻內的再 塡充容器而解決。因此，解決先前的泵停轉事件的方法是 不可靠的，而且遺憾地，實施修理可能進一步損壞系統。 因此習知技術中存在改進重置電子控制分配系統中的停轉 泵的方法的需求。 -6 - 201120315 【發明內容】 考慮到上述問題’本發明的第一個方面是提供用於重 置電子控制分配系統中的停轉泵的一種方法。 本發明的另一個方面，這將隨著詳細描述進行而變得 明顯’由用於重置流體分配系統中的停轉泵的一種方法而 實現’該方法包括確定是否再塡充容器被容納在分配系統 中以及當再塡充容器被移走時，移動泵致動器到裝載位置 0 本發明的又一個方面是提供用於重置流體分配系統中 的停轉栗的一種方法，包括啓動運行計時器、啓動泵致動 器、確定是否當運行計時器的時間遞減時，泵致動器仍然 分配來自流體分配系統的流體、以及如果當運行計時器終 止時而泵致動器仍然分配，則在相反方向移動泵致動器。 本發明的又一個方面是提供用於重置流體分配系統中 的停轉泵的一種方法，包括檢測蓋的打開、激發電動機來 移動致動器到裝載位置、確定致動器在裝載位置的時間、 以及關掉電動機。 本發明的又一個方面是提供一種分配系統，其包括充 滿產品的再塡充容器、適於接收再塡充容器的外殼、由再 塡充容器和外殻中任一個保持的泵以便從再塡充容器分配 產品，以及與泵相關的電子密鑰機構，其中泵有裝載位置 和分配位置，且其中電子密鑰機構被配置成當檢測到停止 情況時，自動地將泵返回到裝載位置。 201120315 本發明的這些和其他方面’和及其優於存在的習知技 術形式，從以下描述將變得明顯’由在此之後描述和1要求 的改進而實現° 【實施方式】 現在參考圖’特別參考圖1和2’能看到的是分配系 統一般是由數字1 〇標記。分配系統1 0包括提供可連接到 牆或其他固定表面的背板14的外殼12°外殼10還包括前 蓋16，顯示在圖1中的虛像，其可相對於背板14移動。 前蓋16可通過鉸鏈機構、可偏斜掣子、摩擦配合、緊固 件、或類似物耦合到背板1 4。儘管本發明被描述爲牆式安 裝分配系統’但應理解的是’在此的教導是可應用到臺面 式安裝、獨立的或其他相似種類的分配系統°無論如何’ 前蓋1 6包括底表面1 7 ’其提供開口 1 8 ’以至允許分配分 配系統中的流體材料。與前蓋1 6相關的是蓋感測器20 ’ 其檢測蓋相對於背板1 4的位置。換句話說’蓋感測器2 0 檢測前蓋1 6何時被安置離開或與背板1 4分離。這樣的事 件通常發生在打開外殼來替換再塡充容器時’但如果前蓋 沒與背板完全地安置好’也可能發生。霍爾效應開關 '磁 感測器、光學感測器、微動開關或其他類似的配置可用於 蓋感測器20。分配系統也提供靠近開口 1 8的手感測器24 ，當物體（像使用者的手）極接近噴嘴以啓動分配事件時 ，該手感測器檢測到物體的存在。感測器24能以紅外或 超音波感測器、電容感測器或相似種類的感測器的形式》 -8- 201120315 分配系統10包括有可旋轉軸27的電動機26，該旋轉 軸不是單向的就是可反轉的。換句話說，在某些實施方案 中’電動機軸僅能在一個方向旋轉，但在其他實施中，電 動機軸能是反轉的，以使它在一個方向旋轉，但如有需要 則改變方向。分配系統1 0的能量由儲存在合適大小電池 室中的至少一個電池28提供。電池（可爲可充電的）提 供必要的能量而且在圖2中用符號V +代表。技術人員應 理解的是，與分配系統內的其他元件一樣，感測器20和 24和電動機26由電池供電，以下將描述。 當前蓋從背板1 4打開時，再塡充容器32被容納在外 殼1 2中。再塡充容器3 2承載將被分配的流體或產品，可 以是肥皂、洗液、消毒劑、或任何其他流體材料或產品， 如特殊終端使用所需要的。每個再塡充容器3 2提供識別 密鑰3 4，也被稱作電子密鑰。在本實施方案中，識別密鑰 是纏繞在再塡充容器32頸部的圓形線圈。關於這種特殊 電子密鑰的詳細解釋提供在美國專利申請序號1 1/01 3,727 ，題名爲 ELECTRONICALLY KEYED DISPENSING SYSTEMS AND RELATED METHODS UTILIZING NEAR FIELD FREQUENCY RESPONSE，在此通過引用倂入。簡要地， 識別密鑰3 4是帶有連接的電容器的線圈。當再塡充容器 3 2正確地安裝在外殼中，識別密鑰3 4被容納在兩個其他 間隔的線圈之間。當間隔線圈之一被激發，作爲識別密鑰 的線圈被激發而且發出上述電容器所特有的編碼信號。編 碼信號被另一間隔線圈檢測，然後被控制器與存儲代碼比 -9 - 201120315 較。如果編碼信號是可接受的，則系統按計劃運行。 編碼信號不匹配儲存的代碼，使得系統不運行。技術 需理解，其他電子的、光學的或機械的密鑰系統能代 面描述的識別密鑰裝置而使用。 軸向地從再塡充容器32延伸的是泵36，噴嘴從 伸。當再塡充容器32安裝進入外殼，泵被容納其中 外耦合到由外殼承載的泵致動器40，該泵致動器移動 以便從再塡充容器分配流體。當再塡充容器被安裝時 致動器40最初在一般由數字42標記的裝載位置。可 各種齒輪的機械聯動裝置44，將電動機26的軸27相 接到泵致動器40。因此，當電動機軸在特定方向旋轉 聯動裝置44將旋轉運動變換到線性運動，以便在想 方向移動泵致動器40，以致動泵。致動器感測器46 到機械聯動裝置44及/或電動機26，及/或泵致動器 以檢測泵致動器是否在裝載位置42。儘管大多數實施 提供致動器感測器46，應理解的是，在某些實施方案 致動器感測器不被提供。 密鑰讀取器一般由數字52標記而且由外殼12承 由電池28供電的讀取器52檢測識別密鑰34的存在 上面描述的，密鑰讀取器52能是間隔的線圈，或者 於所使用的密鑰種類，讀取器52能是條碼感測器、 效應感測器以檢測磁鐵、或任何有能力檢測和產生指 塡充容器被容納在分配系統1 0內的電子信號的感測器 由電池28供電的控制器56連接到蓋感測器20、 如果 人員 替上 泵延 或另 泵， ，泵 包括 互連 時， 要的 連接 40， 方案 中， 載。 。如 取決 霍爾 示再 0 手感 -10- 201120315 測器24、電動機26和致動器感測器45並接收出自其的相 應信號，以便控制其操作。控制器5 6提供必要的硬體和 軟體’用於實施分配系統的操作和任何涉及到檢測到或不 存在不同感測器提供的輸入的副程式。控制器5 6保持一 匹配密鑰58，其與再塡充容器所關聯的電子密鑰比較。換 句話說，控制器5 6檢測識別密鑰和與其相關的代碼，用 於與匹配密鑰5 8相關代碼的比較。如果代碼及/或密鑰匹 配，那麼分配系統被啓用。然而，如果它們不匹配，那麼 分配系統被禁用而且使得不運行。計時器60能連接到控 制器5 6或能倂入控制器內，像本領域技術人員理解的那 樣。 技術人員需理解，電動機26、控制器56、感測器、 識別密鑰3 4、密鑰讀取器5 2以及匹配密鑰可稱作電子密 鑰機構70，其中密鑰34和讀取器52可以是可選配置。電 子密鑰機構70，如圖2所示，還包括直接與控制器、密鑰 和讀取器聯繫的、被用來重置在電子控制分配系統中停轉 的泵的任何元件。像下面方法中描述的，依靠電子密鑰機 構中包括的元件組合或元件中任一個的選定輸入，機構70 被設置成當檢測到停轉情況時，自動地將泵返回到裝載位 置° 正常操作中，當再塡充容器被正確地安裝並被檢測作 爲用於分配系統10的合適再塡充容器且前蓋正確地在背 板14上閉合時，控制器56等待出自手感測器24的物體 正確地放置在開口 1 8下面的檢測信號。當這發生時，控 -11 - 201120315 制器56啓動由電動機26控制的電動機軸27的旋轉， 軸的旋轉運動轉變到聯動裝置4 4的線性運動。聯動裝 的運動導致致動器40的移動，這又導致分配事件。在 配事件期間’泵致動器40從裝載位置42移動到致動位 6 4 (在圖2中虛像所示）’然後經由泵內保持的機械聯 裝置、重力或彈簧偏置返回到裝載位置。 如背景技術中討論的，如果再塡充容器相對於栗致 器不正確地安裝，系統會停止，或由於系統內的阻礙或 械聯動裝置的其他問題而遭遇停止。進一步應理解的是 有時控制器56保持的軟體會卡住且導致泵致動器40不 回到裝載位置。爲了處理停止情況，在此揭露幾個操作 案，以將泵致動器40返回到裝載位置，來使分配系統 確地運轉。 現在參考圖3，用於重置電子分配系統中的停轉泵 方法一般由數字1 〇〇標記。方法開始於由步驟1 02標記 主操作常式。這個主操作常式控制分配系統的正常操作 例如使用者的手的檢測、電動機在正常操作方式中的操 以及分配系統使用的任何其他編程功能。當檢測到停止 況時，負責分配器的使用者或技術人員打開前蓋16，這 操作在步驟1 04由蓋感測器20檢測到，該蓋感測器20 次發出合適的信號到控制器5 6。在步驟1 〇 6，控制器啓 計時器60，以確保重置過程以有效的方式進行。否則， 果不利用計時器，電池會非所期望地消耗電力。儘管能 定任何時段，但在典型的實施方案中，會使用五秒的時 該 置 分 置 動 動 機 9 返 方 正 的 的 > 作 情 個 依 動 如 設 段 -12- 201120315 。無論如何，進行到步驟10 8 ’控制器5 6決定再塡充容器 32是否移走。這通過使用電子密鑰和密鑰讀取器52來實 現。換句話說，如果再塡充容器和它的相關電子密鑰不再 由密鑰讀取器檢測到，那麼在步驟11 〇 ’控制器查詢計時 器是否終止。如果計時器終止’那麼方法或過程返回到步 驟1 02。像前面指出的，計時器的使用在這方面阻止非所 期望的電池消耗。然而，如果計時器未終止，那麼過程返 回到步驟108，其中假定再塡充容器最終被技術人員移走 〇 一旦在步驟1 08檢測到再塡充容器的移走，過程繼續 到步驟112，其中控制器56經由電動機26引起栗致動器 移動到裝載位置42。這重置泵致動器40，然後在步驟II4 ，過程返回到由分配系統保持的主操作常式。在這個時候 ，使用者將希望重新以正確方式安裝再塡充容器，而且結 果是，分配系統像它本應正確無停轉地運行。 總結來說，分配系統1 〇以這樣的方式編程，以至在 再塡充容器從分配系統移走的任何時候，自動地將致動器 返回到預設“裝載”位置42。起初，控制器通過不檢測電子 密鑰的方式尋找將被移走的再塡充容器。一旦再塡充容器 被移走，自動的致動器重置發生，無論前面的泵是否停轉 ，因而消除詢問致動器位置以決定泵是否在移走前停轉的 需求。這是有優勢的，因爲致動器的自動重置確保下個再 塡充容器和它的泵安裝在正確位置。這樣的配置也是有優 勢的，因爲當分配器門打開而且再塡充容器不移走時，在 -13- 201120315 預定的一段時間之後，重置功能暫停。 現在參考圖4，用於在電子分配系統中重置停轉泵 另—個方法一般由數字14〇標記。在方法140中，主操 一般由數字142標記。在這個實施方案中，使用者不需 打開前蓋而且控制器設置成內部地校正停止情況。因此 在步驟144，手感測器24檢測使用者手的存在而且在步 1 46啓動運行計時器。儘管能設定任何時段，但在典型 實施方案中，會使用三秒的時段。隨後’在步驟148， 致動器循環由控制器56開始，以啓動或激發電動機26 其以需要的方式移動泵致動器40。在步驟150，控制器 詢是否運行計時器終止。步驟150允許分配循環的正常 作。然而，一旦運行計時器在步驟1 5 0終止’那麼控制 在步驟152查詢電動機26是否還在運行。如果電動機 再運行，在正常操作中希望這樣，那麼過程進行到在步 142的主操作。然而，如果在步驟152確定電動機還在 行，那麼過程進行到步驟154而且控制器將電動機軸 的旋轉反向，以至將致動器返回到裝載位置42。致動器 回到裝載位置的確認由感測器46產生的信號證實。一 泵致動器返回到裝載位置完成，操作返回到步驟142。 上面描述的重置方法的優勢在於，技術人員不需要 開外殼和移走再塡充容器，然後重新安裝新的容器。通 使用運行定時功能（步驟146和150)的方式，將泵的 動定時，能輕易地確定是否停止發生。如果停止發生， 麼泵非所期望地繼續致動更長的時段。爲了校正這種情 的 作 要 > 驟 的 泵 > 査 操 器 不 驟 運 2 7 返 旦 打 過 致 那 況 -14- 201120315 ，將電動機軸的旋轉反向，引起致動器重新定位。本實施 方案使用連接到控制器56的致動器感測器46，以經由聯 動裝置監視致動器的位置，以便確保致動器返回到裝載位 置。 圖5中所示的又一個實施方案中，方法一般由數字 1 60標記。這個實施方案中也提供主操作步驟1 62，在步 驟1 6 4中，蓋感測器2 0檢測前蓋打開的時間。當此發生 時’計時器在步驟166啓動，而且在此之後，在步驟168 中，電動機被遞增地激發，以移動致動器到裝載位置。儘 管能設定任何時段，但在典型的實施方案中，會使用五秒 的時段。這個實施方案中，電動機軸是單向的。換句話說 ，電動機是不可反轉的。 在步驟1 70，控制器査詢是否計時器終止。如果計時 器沒終止’那麼在步驟1 70中，控制器查詢是否致動器在 由致動器確定的裝載位置。如果確定致動器不在裝載位置 ’那麼方法在步驟174中需要使用者移走再塡充容器。一 旦完成步驟174，方法返回到步驟168而且電動機遞增地 激發，以移動致動器，而且步驟170和172重複。如果在 步驟1*70中，確定計時器終止，那麼控制器在步驟！78中 關閉電動機。可選擇地，如果在步驟1 70中，確定計時器 未終止，但在步驟1 72中，致動器在裝載位置，那麼電動 機關閉。一旦完成步驟178，在步驟1 80中，當由感測器 20確定前蓋閉合時，過程返回到主操作。 本方法的優勢在於，一旦打開前蓋時，分配系統能配 -15- 201120315 置爲自動地慢進或旋轉電動機軸。電動機接著稍微連續地 給予電力，直到致動器返回到正確位置。如果泵停轉，致 動器將不會返回到它的裝載位置，直到停轉泵和再塡充容 器被移走爲止。如果泵不停轉，那麼電動機軸旋轉然後關 掉，因爲從泵致動器的上次循環，致動器在正確的位置。 不管泵是否停轉，致動器將留在正確位置，以接收新的再 塡充容器。計時器功能阻止電池消耗。 因此，依據前面的方法，應理解的是，能使用各種方 案以重置泵致動器到裝載位置，以至停轉泵能輕易地校正 ，而不會損壞再塡充容器或發生不想要的分配事件。這節 省再塡充容器中流體的損失而且也阻止操作分配系統裝置 的可能的損壞。 所以，能看到的是，本發明的目的被結構和它上面提 到的使用方法而滿足。而根據專利條例，僅最好的方式和 較佳的實施方案已被提供和詳細描述，應理解的是，本發 明不限於其或由其所限制。因此，對於評價本發明的真正 範圍和廣度，應參照以下的申請專利範圍。 【圖式簡單說明】 爲了徹底地理解本發明的目的、技術和結構’將參考 以下詳細的描述和附圖，其中： 圖1是根據本發明的槪念而製造的電子控制分配系統 的正面透視圖； 圖2是電子控制分配系統的簡圖； -16- 201120315 圖3是用於重置分配系統中的停轉的泵的方法的操作 流程圖； 圖4是用於重置分配系統中的停轉泵的方法的操作流 程圖的可選擇實施方案；以及 圖5是用於重置分配系統中的停轉泵的方法的操作流 程圖的另一個可選擇實施方案。 【主要元件符號說明】 1 〇 :分配器 1 2 :外殼 1 4 :背板 16 :前蓋 1 7 :底表面 1 8 :噴嘴開口 20 :蓋感測器 24 :手感測器 26 :電動機 27 :電動機軸 2 8 :電池室 32 :再塡充容器 3 4 :識別密鑰 3 6 ·•泵 40 :泵致動器 42 :裝載位置 -17- 201120315 44 :聯動裝置 46 :致動器感測器 5 2 :密鑰讀取器 5 6 :控制器 5 8 :匹配密鑰 60 :計時器 6 4 :致動位置 1 0 0 :重置停轉泵的方法 146、 172、 102、 104、 106、 108、 110、 112、 114、 142、 144、 148、 150、 152、 154、 162、 164、 166、 168、 170、 174、 178、 180：步驟 140、160:重置停轉泵的方法 -18-201120315 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention generally relates to fluid dispensing systems. In particular, the present invention relates to dispensers that allow only designated refill containers with dispensable materials to be installed therein and, if desired, to be installed by a selected dealer. More specifically, the present invention relates to resetting a stalled, used in an electronic key fluid dispensing system. [Prior Art] It is well known to provide fluid dispensers for restaurants, factories, hospitals, bathrooms, and homes. These dispensers may contain fluids such as soaps, antibacterial cleaners, disinfectants, lotions and the like. It is also known to equip dispensers with certain types of pump actuation devices in which a user pushes or pulls a rod to dispense a quantity of fluid into the user's hand. A "hands-free" dispenser can also be used where the user simply places the hand under the sensor held by the dispenser housing and a certain amount of fluid is dispensed by the motorized pump. Related types of dispensers can be used to dispense powder, aerosol material or paper products. The dispenser can hold a certain amount of fluid directly, but this is found to be cumbersome and difficult to service. Therefore, it is known to use a sputum bag or container holding a certain amount of fluid and to provide a pump and nozzle device. The advantage of these sling bags is that they can be easily installed without trouble. Moreover, the dispenser can monitor the use to indicate that the amount in the filling bag is small and provide other dispenser status information. A refill container with an identifier such as an electronic or mechanical key has been developed to prevent unauthorized People replace inferior products into the distribution system. -5- 201120315 In the field, various mechanical or electronic keys can be used to associate the refill container and the fluid contained therein with a particular dispenser. The electronic key may include, but is not limited to, a magnetic sensor, an optical sensor, a radio frequency identification device, and the like. Of these types of dispensers, it is critical that the identifier is properly positioned or coupled to the refill container and that the refill container is properly received in the dispenser housing. If the identification key is not properly located, then the refill container cannot be read by the distribution system and cannot be run. However, it is possible that the refill container is operatively detected by the dispensing system, but is still installed in such a manner that the pump and nozzle device can become clogged. An incorrectly installed stalled or blocked refill container can cause damage to the pump actuator that is held by the linkage of the refill container and/or motor assembly and associated moving pump actuator . Improperly installed refill containers or stalled pump actuators can also cause excess fluid to be dispensed. The pump actuator held by the dispenser or the pump and nozzle device held by the refill container can be blocked or stalled for any number of reasons. For example, the pump can be blocked by fluid material from the previous dispensing cycle. Debris or other obstructions can impede the movement of the pump actuator or, as noted, the refill container cannot be properly installed into the dispensing housing. For example, the pump can be mounted under the actuator to prevent operation of the dispenser and refill container. In the past, problems were solved by the user recognizing the stall condition and then manually resetting the refill container in the dispenser housing. Therefore, the method of resolving previous pump stall events is unreliable and, unfortunately, implementing repairs may further damage the system. There is therefore a need in the prior art to improve the method of resetting a stall pump in an electronically controlled dispensing system. -6 - 201120315 SUMMARY OF THE INVENTION In view of the above problems, a first aspect of the present invention provides a method for resetting a stall pump in an electronically controlled dispensing system. In another aspect of the invention, this will become apparent as the detailed description proceeds 'by a method for resetting a stall pump in a fluid dispensing system' which includes determining whether the refill container is contained in Moving the pump actuator to the loading position 0 in the dispensing system and when the refilling container is removed 0. A further aspect of the invention provides a method for resetting a stalling pump in a fluid dispensing system, including starting up a timer, activating the pump actuator, determining whether the time to run the timer is decreasing, the pump actuator still dispensing fluid from the fluid dispensing system, and if the pump actuator is still dispensed when the running timer expires, Move the pump actuator in the opposite direction. Yet another aspect of the present invention is to provide a method for resetting a stall pump in a fluid dispensing system, including detecting the opening of the cover, exciting the motor to move the actuator to the loading position, determining the time at which the actuator is in the loading position , and turn off the motor. Yet another aspect of the present invention is to provide a dispensing system comprising a refill container filled with product, a housing adapted to receive a refill container, a pump held by either of the refill container and the housing for re-spinning A container dispensing product, and an electronic key mechanism associated with the pump, wherein the pump has a loading position and a dispensing position, and wherein the electronic key mechanism is configured to automatically return the pump to the loading position when a stop condition is detected. 201120315 These and other aspects of the present invention, and its superior technical form, which will be apparent from the following description, will be apparent from the following description and the improvements required by the first embodiment. [Embodiment] Referring now to the drawings It can be seen with particular reference to Figures 1 and 2' that the dispensing system is generally marked by the number 1 〇. The dispensing system 10 includes a housing 12 that provides a backing plate 14 connectable to a wall or other fixed surface. The housing 10 also includes a front cover 16 that is shown in Fig. 1 as a virtual image that is movable relative to the backing plate 14. The front cover 16 can be coupled to the backing plate 14 by a hinge mechanism, a deflectable latch, a friction fit, a fastener, or the like. Although the invention has been described as a wall mounted dispensing system 'but it should be understood that 'the teachings herein are applicable to countertop mounting, stand-alone or other similar types of dispensing systems. Anyway, the front cover 16 includes a bottom surface. 1 7 'It provides an opening 18' to allow distribution of fluid material in the dispensing system. Associated with the front cover 16 is a cover sensor 20' which detects the position of the cover relative to the backing plate 14. In other words, the cover sensor 20 detects when the front cover 16 is placed away from or separated from the backing plate 14. Such an event typically occurs when the outer casing is opened to replace the refill container, but may also occur if the front cover is not completely seated with the back panel. Hall effect switches 'Magnetic sensors, optical sensors, microswitches or other similar configurations can be used for the cover sensor 20. The dispensing system also provides a hand sensor 24 adjacent the opening 18 that detects the presence of an object when an object (like a user's hand) is in close proximity to the nozzle to initiate a dispensing event. The sensor 24 can be in the form of an infrared or ultrasonic sensor, a capacitive sensor or a similar type of sensor. -8- 201120315 The dispensing system 10 includes an electric motor 26 having a rotatable shaft 27 that is not a single It is reversible. In other words, in some embodiments the 'motor shaft can only be rotated in one direction, but in other implementations, the motor shaft can be reversed so that it rotates in one direction, but changes direction if necessary. The energy of the dispensing system 10 is provided by at least one battery 28 stored in a suitably sized battery compartment. The battery (which can be rechargeable) provides the necessary energy and is represented by the symbol V+ in Figure 2. The skilled person will understand that sensors 20 and 24 and motor 26 are powered by batteries as are other components within the distribution system, as will be described below. When the front cover is opened from the backing plate 14, the refill container 32 is housed in the outer casing 12. The refill container 32 carries the fluid or product to be dispensed, which may be soap, lotion, disinfectant, or any other fluid material or product, as required for special end use. Each refill container 3 2 provides an identification key 34, also referred to as an electronic key. In the present embodiment, the identification key is a circular coil wound around the neck of the refill container 32. A detailed explanation of such a special electronic key is provided in U.S. Patent Application Serial No. 1 1/01 3,727, entitled ELECTRONICALLY KEYED DISPENSING SYSTEMS AND RELATED METHODS UTILIZING NEAR FIELD FREQUENCY RESPONSE, which is incorporated herein by reference. Briefly, the identification key 34 is a coil with a connected capacitor. When the refill container 3 2 is properly mounted in the housing, the identification key 34 is housed between two other spaced coils. When one of the spacer coils is activated, the coil as the identification key is activated and emits a coded signal unique to the above capacitor. The coded signal is detected by another spaced coil and then compared to the stored code by the controller -9 - 201120315. If the encoded signal is acceptable, the system runs as planned. The encoded signal does not match the stored code, so the system does not run. Technology It is to be understood that other electronic, optical or mechanical key systems can be used to identify the keying device as described. Extending axially from the refill container 32 is a pump 36 from which the nozzle extends. When the refill container 32 is installed into the housing, the pump is received therein to be coupled to a pump actuator 40 carried by the housing, the pump actuator being moved to dispense fluid from the refill container. When the refill container is installed, the actuator 40 is initially in a loading position generally designated by numeral 42. The mechanical linkage 44 of the various gears can be coupled to the pump actuator 40 by the shaft 27 of the motor 26. Thus, when the motor shaft rotates in a particular direction, the linkage 44 shifts the rotational motion to linear motion to move the pump actuator 40 in the desired direction to actuate the pump. Actuator sensor 46 to mechanical linkage 44 and/or motor 26, and/or pump actuator to detect if the pump actuator is in loading position 42. While most implementations provide actuator sensor 46, it should be understood that in certain embodiments the actuator sensor is not provided. The key reader is generally identified by the numeral 52 and the reader 52, powered by the battery 28 by the housing 12, detects the presence of the identification key 34. As described above, the key reader 52 can be a spaced coil, or Depending on the type of key used, the reader 52 can be a bar code sensor, an effect sensor to detect the magnet, or any sensor capable of detecting and generating an electronic signal that is contained within the dispensing system 10 by the fingerprint container. The controller 56 powered by the battery 28 is connected to the cover sensor 20, if the person replaces the pumping or another pump, the pump includes the desired connection 40, in the scheme, the load. . For example, the detector 24, the motor 24 and the actuator sensor 45 are received and the corresponding signals are received to control their operation. Controller 56 provides the necessary hardware and software 'for the operation of the dispensing system and any sub-programs that involve the detection or absence of inputs provided by different sensors. Controller 56 maintains a matching key 58, which is compared to the electronic key associated with the refill container. In other words, the controller 56 detects the identification key and the code associated therewith for comparison with the code associated with the matching key 58. If the code and / or key match, the distribution system is enabled. However, if they do not match, the distribution system is disabled and does not run. The timer 60 can be connected to the controller 56 or can be incorporated into the controller, as will be understood by those skilled in the art. The skilled person will understand that the motor 26, the controller 56, the sensor, the identification key 34, the key reader 52 and the matching key may be referred to as an electronic key mechanism 70, wherein the key 34 and the reader 52 can be an optional configuration. The electronic key mechanism 70, as shown in Figure 2, also includes any components that are directly coupled to the controller, key, and reader to reset the pump that is stalled in the electronically controlled dispensing system. As described in the method below, relying on the selected input of any of the component combinations or components included in the electronic key mechanism, the mechanism 70 is configured to automatically return the pump to the loading position when a stall condition is detected. The controller 56 waits for an object from the hand sensor 24 when the refill container is properly installed and detected as a suitable refill container for the dispensing system 10 and the front cover is properly closed on the back panel 14. The detection signal placed under the opening 18 is correctly placed. When this occurs, the controller -11 - 201120315 starts the rotation of the motor shaft 27 controlled by the motor 26, and the rotational motion of the shaft is shifted to the linear motion of the linkage 44. The movement of the linkage causes movement of the actuator 40, which in turn causes an assignment event. During the dispensing event, the pump actuator 40 moves from the loading position 42 to the actuating position 64 (shown in phantom in Figure 2) and is then returned to the loading position via a mechanical linkage, gravity or spring bias held within the pump. . As discussed in the background, if the refill container is incorrectly mounted relative to the pump actuator, the system will either stop or be stopped due to obstructions in the system or other problems with the mechanical linkage. It will be further understood that sometimes the software held by controller 56 can get stuck and cause pump actuator 40 to not return to the loading position. In order to handle the stop condition, several operations are disclosed herein to return the pump actuator 40 to the loading position for the dispensing system to operate properly. Referring now to Figure 3, the method for resetting the stall pump in an electronic distribution system is generally indicated by the number 1 〇〇. The method begins by marking the main operational routine by step 102. This primary operating routine controls the normal operation of the dispensing system, such as the detection of the user's hand, the operation of the motor in normal operating mode, and any other programming functions used by the dispensing system. When a stop condition is detected, the user or technician responsible for the dispenser opens the front cover 16, which is detected by the cover sensor 20 at step 104, which sends the appropriate signal to the controller 20 times. 5 6. At step 1, the controller starts timer 60 to ensure that the reset process is performed in an efficient manner. Otherwise, if the timer is not used, the battery will consume power undesirably. Although it can be set at any time, in a typical embodiment, the five-second time is used to divide the positive machine's positive > behavior as set by paragraph -12-201120315. In any event, proceeding to step 10 8 ' controller 5 6 determines whether or not the refill container 32 is removed. This is achieved by using an electronic key and key reader 52. In other words, if the refill container and its associated electronic key are no longer detected by the key reader, then at step 11 控制器 'the controller queries if the timer is terminated. If the timer expires then the method or process returns to step 102. As noted earlier, the use of timers prevents undesired battery drain in this regard. However, if the timer has not expired, then the process returns to step 108 where it is assumed that the refill container is eventually removed by the technician. Once the removal of the refill container is detected in step 108, the process continues to step 112. Wherein the controller 56 causes the pump actuator to move to the loading position 42 via the electric motor 26. This resets the pump actuator 40, and then in step II4, the process returns to the main operating routine maintained by the dispensing system. At this time, the user will want to reinstall the refill container in the correct manner, and as a result, the distribution system will operate as if it were supposed to run without stopping. In summary, the dispensing system 1 is programmed in such a manner that the actuator is automatically returned to the preset "loading" position 42 whenever the refilling container is removed from the dispensing system. Initially, the controller looks for a refill container that will be removed by not detecting the electronic key. Once the refill container is removed, an automatic actuator reset occurs regardless of whether the front pump is stalled, thereby eliminating the need to interrogate the actuator position to determine if the pump is stalled before removal. This is advantageous because the automatic reset of the actuator ensures that the next refill container and its pump are installed in the correct position. This configuration is also advantageous because when the dispenser door is opened and the refill container is not removed, the reset function is suspended after a predetermined period of time from -13 to 201120315. Referring now to Figure 4, for resetting a stall pump in an electronic distribution system, another method is generally indicated by the numeral 14〇. In method 140, the main operation is generally marked by numeral 142. In this embodiment, the user does not need to open the front cover and the controller is arranged to internally correct the stop condition. Thus at step 144, hand sensor 24 detects the presence of the user's hand and initiates the run timer at step 146. Although any time period can be set, in a typical implementation, a three second time period is used. Then at step 148, the actuator cycle is initiated by controller 56 to activate or energize motor 26 which moves pump actuator 40 in a desired manner. At step 150, the controller queries if the running timer expires. Step 150 allows the normal operation of the allocation loop. However, once the running timer expires at step 150, then control at step 152 queries if the motor 26 is still running. If the motor is running again, this is desirable in normal operation, then the process proceeds to the main operation at step 142. However, if it is determined in step 152 that the motor is still in progress, then the process proceeds to step 154 and the controller reverses the rotation of the motor shaft to return the actuator to the loading position 42. The confirmation of the actuator returning to the loading position is confirmed by the signal generated by the sensor 46. A pump actuator returns to the loading position and the operation returns to step 142. The advantage of the reset method described above is that the technician does not need to open the housing and remove the refill container and then reinstall the new container. By using the run timing function (steps 146 and 150), the pump timing can be easily determined to stop or not. If the stop occurs, the pump continues to actuate for a longer period of time than desired. In order to correct this situation, the > pump > the chasing machine does not run out. 2 7 After returning to the condition -14-201120315, the rotation of the motor shaft is reversed, causing the actuator to reposition. This embodiment uses an actuator sensor 46 coupled to controller 56 to monitor the position of the actuator via the linkage to ensure that the actuator returns to the loading position. In yet another embodiment shown in Figure 5, the method is generally indicated by the numeral 1 60. A primary operational step 1 62 is also provided in this embodiment. In step 164, the cover sensor 20 detects the time the front cover is open. When this occurs, the timer is started at step 166, and after that, in step 168, the motor is incrementally energized to move the actuator to the loading position. Although any time period can be set, in a typical implementation, a five second period is used. In this embodiment, the motor shaft is unidirectional. In other words, the motor is not reversible. At step 1 70, the controller queries if the timer expires. If the timer is not terminated then then in step 170, the controller queries if the actuator is at the loading position determined by the actuator. If it is determined that the actuator is not in the loading position, then the method requires the user to remove the refill container in step 174. Once step 174 is completed, the method returns to step 168 and the motor is incrementally energized to move the actuator and steps 170 and 172 are repeated. If in step 1*70, it is determined that the timer is terminated, then the controller is at step! 78 Turn off the motor. Alternatively, if in step 170, it is determined that the timer is not terminated, but in step 1 72, the actuator is in the loading position, then the motor is turned off. Once step 178 is completed, in step 180, when it is determined by sensor 20 that the front cover is closed, the process returns to the main operation. The advantage of this method is that once the front cover is opened, the dispensing system can be equipped with -15-201120315 to automatically jog or rotate the motor shaft. The motor then energizes slightly continuously until the actuator returns to the correct position. If the pump stops, the actuator will not return to its loading position until the stop pump and the refill container are removed. If the pump does not stop, the motor shaft rotates and then turns off because the actuator is in the correct position from the last cycle of the pump actuator. Regardless of whether the pump is stopped or not, the actuator will remain in the correct position to receive a new refill container. The timer function prevents battery drain. Therefore, in accordance with the foregoing method, it should be understood that various solutions can be used to reset the pump actuator to the loading position so that the stall pump can be easily corrected without damaging the refilling container or causing unwanted dispensing. event. This saves the loss of fluid in the refill container and also prevents possible damage to the operating distribution system unit. Therefore, it can be seen that the object of the present invention is satisfied by the structure and the method of use mentioned above. While only the best mode and preferred embodiments have been shown and described in detail in accordance with the specification of the invention, it is understood that the invention is not limited thereto. Therefore, for the evaluation of the true scope and breadth of the present invention, reference should be made to the following claims. BRIEF DESCRIPTION OF THE DRAWINGS In order to fully understand the objects, techniques and structures of the present invention, reference will be made to the following detailed description and drawings in which: FIG. 1 is a front perspective view of an electronically controlled dispensing system made in accordance with the present invention. Figure 2 is a simplified diagram of an electronically controlled dispensing system; -16-201120315 Figure 3 is an operational flow diagram of a method for resetting a stalled pump in a dispensing system; Figure 4 is a diagram for resetting a dispensing system An alternative embodiment of an operational flow diagram of a method of stalling a pump; and Figure 5 is another alternative embodiment of an operational flow diagram of a method for resetting a stall pump in a dispensing system. [Main component symbol description] 1 〇: distributor 1 2 : outer casing 1 4 : back plate 16 : front cover 1 7 : bottom surface 1 8 : nozzle opening 20 : cover sensor 24 : hand sensor 26 : motor 27 : Motor shaft 2 8 : Battery compartment 32 : Refill container 3 4 : Identification key 3 6 · Pump 40 : Pump actuator 42 : Loading position -17 - 201120315 44 : Linkage 46 : Actuator sensor 5 2 : Key reader 5 6 : Controller 5 8 : Matching key 60 : Timer 6 4 : Actuating position 1 0 0 : Method 138, 172, 102, 104, 106 for resetting the stall pump 108, 110, 112, 114, 142, 144, 148, 150, 152, 154, 162, 164, 166, 168, 170, 174, 178, 180: Steps 140, 160: Method of resetting the stall pump-18 -